One guy overfilled his gas tank and fuel went backwards down the vent tube and got liquid gas in his EVAP components... He ended up sucking liquid fuel into his catch can under the hood and it was gurgling like a bong.
I'm 98% you should have no liquid gas in the EVAP components.
When you fill your tank, air rushes out of the tank, through the "air filter" and on to the gas filler nozzle.
When the tank is full, the air stops flowing and that triggers the nozzle to shut off.
If the "air filter" is full of gas, it can't " breathe" so the filler nozzle shuts off... It can't push past the liquid blockage.